@misc{indiciae9af71bec34b6,
  title = {Experimental and nonexperimental studies: methodological, ethical, and practical implications in the context of hepatobiliary tumors.},
  author = {L Mariani},
  year = {1993},
  doi = {10.1002/jso.2930530549},
  url = {https://pubmed.ncbi.nlm.nih.gov/8503976/},
  note = {Source identifier: 8503976}
}